Controller for gas-burners.



No. 695`,|||. Patented Mar. n, mm2.

P. H. McnERMoTT.

coNTRoL'LE' Fon GAS umuans.

(Application filed Apr. 26, 1901.)

(.No Model.)

TH: NcRms #mms co.. Puma-urna. WASHINGTON. n. c.

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PHILIP II. MCDERMOTT, OF NEW YORK, N. Y.

CONTROLLER FOR GASBURNERS.

SPECIFICATION forming part of Letters .Patent No. 695,111, dated March 1 1, 1902.

Application filed April 26, 1901. Serial No. 57,527. (No model.)

To @ZZ whom t may concern,.-

Be it known that I, PHILrr H. MoDERMorT, a citizen of the United States, and a resident of New York city,borough of ManhattamState 'of New York, have invented certain new and useful Improvements in Controllers for Gas- Burners, of which the following is a specification.

My invention has relation to gas-burners used with heating appliances, such as cooking stoves, and has for its obj ect to provide means adapted to be attached to various styles of burners and arranged to reduce the iiow of gas to the burner when a utensil is removed from above.

The invention consistsv in the novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part hereof, wherein- Figure lis a plan view of a burner provided with my improvements. Fig. 2 is a side View thereof. Fig. 3 is a detail view of the cock and the arm connected therewith. Fig. is a perspective view of the arm and devices to be connected with the cock. Fig. 5 is a plan view thereof, partlyin section. Fig. 6 is a perspective view illustrating the lever and the means for attaching the same to the gasburner, and Fig. 7 is a detail view of the under side of part of the link 11.

In the accompanying drawings similar nuinerals of reference indicate corresponding parts in the several views.

In the drawings the numeral l indicates a lever, which is shown inthe form of a bellcrank, pivotally connected with a support 2, which may be provided with suitable means for attaching it lin connection with a gasburner 3. I have shown the support provided with a clamp 4, adapted to be attached to the pipe 3il of the burner, although the support 2 may be attached to any other suitable iix ture.

1rt isa weight connected with lever 1, and the latter is provided with an extension 1b.

The parts are to be adjusted in connection with the burner in such manner that the extension 11 will be in position over the burner to be engaged by a utensil when the latter is placed in position on a stove or the like above the burner, the utensil thereby swinging the lever 1 on its pivot. p

The lever 1 is connected with an arm 5, that is adapted to be attached to the key or stem 6 of a stop-cock 6 of the gas-supply pipe. The arm 5 is movably connected with a stem 7, shown provided with a crank or extension 8, that has an opening 8, whereby it may be secured to the key 6a by the screw 6b, and can thus be adjusted to the proper position. The arm 5 is joined to the lever l by suitable interposed connections, and in order to give the arm the requisite movement for operating the cock while the lever 1 has a relatively limited movement I have shown a swinging arm 9,7pivotally connected with the support 2, as at 9, and also connected with the depending portion of the lever 1, as by a pin 10 working in a slot 10a. As the pin 10 is near pivot 9, it will be seen that the lowerend of arm 9 will be given a greater throw than the depending portion of arm 1.

11 is a link interposed between the paris 5 and 9 for operating the former by the lever 1, and in order to provide for adjustment of my improvement to burners of various dimensions I preferably make the link 11 eX- tensible. For this purpose Ihave shown the link as composed of two members 11 11b, prou vided with slots adapted to aline, and .12 is a clamping bolt and nut adapted to pass into said slots and to lock the parts 11n l1b together, so as to provide for the necessary eX- tension of the link 11. The connection of the link 11 with the arm `5 is intended to be such that the lever 1 will move arm sufficiently far to fully open the cock from a partially-open position, and when full closure of the cock isv desired the arm 5 can move independent of the link 11. For this purpose I have shown a pin 5 extending from the arm 5 and passing through the slot in the eXtension 11, and 5b is an enlargement or head at the base of the pin 5, adapted to receive a socket 11 C in the part 11a, thesocket communicating with the slot therein, the head 5b and said socket serving to operatively connect the arm 5 with the link 11. The relative arrangement of the parts is intended to be such that when they are in the position shown in Figs. 1 and 2 the cock will be partly open, and when the utensil depresses the le-a IOO ver 1 the arm 5 will be swung to fully open the cock, as toward the left in Fig. 1. When the utensil is removed, the parts will resume the position shown in Fig. 1. The weight 1a tends to maintain the cock partly open, causing the depending portion of lever 1 to engage burner 3 as an abutment, Fig. 2. Provision is also made for permitting the cock to be fully closed either when the utensil is upon the lever 1 or otherwise. For this purpose I have provided a movable connection between the arm 5 and the stem 7, as well as means for moving the head 5b out of the socket 11c when the link 11 nearly reaches the end of its operative stroke in opening the cock. For these purposes I provide the arm 5 with a head 13, that is swiveled on the stem 7 and has one or more sockets 13?, adapted to receive a pin or the like 14, secured to the stem 7, (see Figs. 4 and 5,) a spring 15 upon said stem serving to normally hold the head 13 in engagement with the pin 14, the spring beinginterposed between said head and a nut or the like 16 upon the stem 7. To permit freedom of movement between the parts 13 and 14, the head adjacent to the socket 13'VL is suitably beveled, as at 13b, to permit the pin to ride into and from the socket. When the parts are in the normal position shown in Fig. 2, the lever 1 being stopped by the burner 3 or other suitable abutment, the stem 6 can be fully turned to shut od the flow of gas, as the head 5b and socket 11c of link 11 serve to hold the arm 5 from independent movement toward burner 3, and thus as the stem 6a is so turned the pin 14 will pass out of the socket 13. When the cock is next turned fully on, the pin and socket will be again brought into engagement to connect the arm 5 rigidly with the stem '7.

In order to release the link 11 from the arm 5 at the time that the cock is fully opened by the placing of the utensil upon the lever 1, so as to enable the cock to be fully turned off while the utensil is upon said lever, I provide means for releasing the connection of the arm 5 with the link 11 by the action of the latter in opening the cock. For this purpose I have provided a cam or inclined surface 18 upon the arm 5, which lies in such position that as the arm 5 continues fully to the left in Fig. 1 said cam or incline will pass under the link 11 and lift it to release the head 5b from the socket 11C, leaving the cock free and disconnected from the lever 1. However, when the cock is next shut of and the lever 1 released the socket 11c and the head 5b will again engage.

From the foregoing description it will be understood that my improvements are adapted to be applied to burners and their fittings of variousV styles and dimensions, so as to project the lever 1 into line with a utensil and connect said lever with the cock, and by this means it is` not necessary to build the gascontrolling devices in with the burner for any particular stove or heating appliance. When the cock is shut off, the parts 5 and 7 are disconnected frorn their operative relation, as before explained, and if a utensil is now placed over the burner the cock will not open because of the disconnection of parts 13 and 14. If the cock is opened before a utensil is placed upon the arm 1, the pin 5a will draw the link 11 until the horizontal portion of arm 1 engages the burner 3, whereupon movement of link 11 to the left will be arrested and the continued movement of the cock and arm 5 will cause the engagement of head 13 with pin 14. When the utensil is now placed upon the lever 1, the cock will remain open. When the utensil is removed, the weight 1a will restore. the parts to the position shown in Fig. 2, whereby the link 11 will cause arm 5 to return the cock to the partiallyopen position indicated. A low ame can be thus maintained during such times as the cock has not been fully shut oif and while the utensils are removed from over the burner.

I do not limit my invention to the various details of construction, as they may be varied without departing from the spirit thereof.

Having now described my invention, what I claim is- 1. In a device of the character described, the combination of a lever having a portion adapted to overlie a burner, means for attaching the same in connection therewith, an arm for attachment to a stem of a cock, means for connecting said arm and lever, and meansfor permitting independent movement between the arm and said stem, substantially as described.

2. The combination of a lever having a portion adapted to extend over a burner, means for attaching the same in connection with the burner, a stem provided with means for attachment to the key of a cock, an arm associated with said stem, and a link between said arm and lever provided with means for movably connecting it with the arm to permit the cock to have movementindependently of the lever, substantially as described.

3. The combination of a lever having aportion adapted to extend over a burner, means for attaching the lever in connection therewith, an arm, means for connecting it with the key of a cock, an extensible connection between said lever and arm, and means for permitting the key of the cock to have movement independent of said devices, substantially as described.

4. The combination of a lever having a portion adapted to extend over a burner, means for attaching the same in connection therewith, a stem connected with the key of a cock, an arm swiveled on said stem, a clutch for adjustably holding said arm and stem, a connection between said lever and arm, and means to permit the stem of the cock to have movement independent of said arm, substantially as described.

5. The combination of a lever having a portion adapted to extend over a burner, means for attaching the lever in connection with the burner, a stem to be connected with the key of a cock, an arm swiveled on said stem and having a head, a pin-and-socket connection between said arm and head, a link between said lever and arm, and a pin-and-slot con nection between the arm and link for permitting said parts to have independent movement, substantially as described.

6. The combination of a lever having a portion adapted to extend over a burner, means for attaching the lever in connection with the burner, a stem to be connected with the key of a cock, an arm connected with said stem and provided with a pin and a head, a link between said lever and arm provided with a slot and a socket, and means for releasing the head from said socket by the movement of the link and arm, substantially as described.

7. The combination of a lever having a portion adapted to extend over a burner, means for attaching the lever in connection with the burner, a stem to be connected with the key of a cock, an arm connected with said. stem and provided with a pin and a head, a link between said lever and arm provided with a slot and a socket receiving said pin and head, and an inclined surface adapted to release said head and socket to permit the arm to have movementindependent of the link, substantially as described.

8. The combination of a lever having a portion adapted to extend over a burner, a snpport for the lever, an arm pivotally connected with said support and also pivotally connected with said lever, an arm adapted to be connected to the key of a cock, a link between said arms, and means for permitting movement of the second-mentioned arm independent of said link, substantially as described.

PHILIP H. MCDERMOTT.

Witnesses:

T. F. BOURNE, M. MANNING. 

